Revert "drm/exynos: g2d: fix system and runtime pm integration"

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This reverts commit b05984e21a.

The change, i.e. merging the sleep and runpm operations, produces
a deadlock situation:
(1) exynos_g2d_exec_ioctl() prepares a runqueue node and
    calls g2d_exec_runqueue()
(2) g2d_exec_runqueue() calls g2d_dma_start() which gets
    runtime PM sync
(3) runtime PM core calls g2d_runtime_resume()
(4) g2d_runtime_resume() calls g2d_exec_runqueue(), which
    loops back to (2)

Due to mutexes that are in place, a deadlock situation is created.

Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>

...

This commit is contained in:

Tobias Jakobi 2016-09-27 17:50:06 +02:00 • committed by Inki Dae

parent 9276dff7a8

commit 05e2e4666c

1 changed files with 22 additions and 7 deletions

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drivers/gpu/drm/exynos/exynos_drm_g2d.c

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